<div class="steps">
  <nz-steps [(nzCurrent)]="_currentStep">
    <nz-step [nzTitle]="'用户注册'" [nzDescription]="'填写用户资料.'"></nz-step>
    <nz-step [nzTitle]="'app授权'" [nzDescription]="'授权分配.'"></nz-step>
  </nz-steps>
</div>